Improvement in doors and bits of puddling and boiling furnaces



ya. HABEBFIELD. Doors and Bits of Puddling and Builingfurnaces; 4 139 244 Pa tentedMay27,1873- \NHIJEESEE:

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JOHN G. HABERFIELD, on wnnnmne, wnsr VIRGINIA.

IMPROVEMENT IN DOORS AND BITS OF RUDDLING AND BOILING FURNACES.

Specification forming part of Letters Patent No. 139,244, dated May 27, 1873; application filed March 24, 1873. I

To all whom it may concern:

Be it known that I, J onn G. HABERFIELD, of Wheeling, in the county of Ohio and State of West Virginia, have made the invention hereinafter set forth, of which the following is a specification, reference being had to the accompaning drawing and the letters of reference thereon.

My invention relates to an Improvement in Doors for Boiling, Paddling, or Heating Furnaces; and consists, first, of the combination of the door-frame, provided with the door-slide plates, whether with or without the notch-catches on the latter, and the door provided with corresponding plates; second, of the combination of the door and door-bit; and,

, third, of the combination of the door-frame,

door, and door-guide roller, each of which is hereinafter described.

In the drawing, Figure 1 is a perspective of the door-frame with the door within it. Fig. 2 is a view of the interior of one of two like sides of the door-frame, against which the door abuts when closed within the frame. Fig. 3 is a view of one of two like upright sides or edges of the door which abut, when closed, against that part of the frame shown in Fig. 2. Fig. 4 is a perspective of the door-bit, or the lining of the stoking-hole, in the door. Fig. 5 is a vertical section of the front part of the door, showing how the door-bit, shown in Fig. 4, is attached thereto.

Particular Description of the Above Figures.

In Fig. 1, A is the door-frame; B, the door closed within said frame; 0, door bit, or stoking-hole, within door B; E, movable bar across the door, to keep the latter down and in place; F, roller attached to the frame to keep the door within the frame while the door is being raised and lowered by means of a lever connected with it, on its top edge.

In Fig. 2, G is a door-slide plate or bar on each of the inner sides of the upright sides of the interior of the door-frame, which may be either plain or straight, or provided with one or more notch-catches, h. In Fig. 3 I is a sIideplate or bar upon both edges or sides of the door, made either plain or with catches, to

correspond with the ones on the frame, before I described. When the door is inthe frame these slides or bars on the one come in contact or bear upon the slides on the other. I

If made plain they make the door close and prevent it from falling into the furnace, and

if notched they do the same, and also further lock the door or prevent it from coming out;- ward from out the frame. Besides, it makes unnecessary the use of the cross-bar E. Heretofore neither door nor theframe has been made with such plates or bars thereon, but the plain-edged door has abutted against a plain frame, and the door was prevented from going into the furnace by the checks of the p frame, which latter being exposed to the heat soon burned ofi, allowing the door to be kept out of the furnace by the best outside means possible, and also admitting a too great flow of air into the furnace,to the injury of the metal being prepared therein. As I make my door, all of these ill consequences are prevented, or remedied in such a great degree as to make it far superior in utility.

In Fig. 4, L is the doorbit or liningof the. stoking-hole, made, as shown-triangularwith beveled edges to fit to like sides and edges in the opening of the door. I K is a circular groove in the bit to fit to a corresponding edge in the opening; M M, tangs on same to help to keep it in place in the opening. When i so constructed it is inserted into the stoking. I

hole and made fast therein, as shown in Fig.

5, in which n 18 a projection on the inside of the face of the door, and p is a wedge or key I driven in between this projection and bit. This holds it firmly therein. When the door-bitis thus put into the door, the door is filled in in p, the usual manner with fire-brick, which also I more securely fastens the bit within its place. Heretofore this bit has been bolted onto the door. The bolts, being exposed at one end to I the intense heat of the furnace, soon burned off,

to the great detriment of the operator. This I annoyance I believe I have removed by constructing and affixingthe bit as above described. Heretofore there has been no device, I

that I am aware of, for holding the doorwithin the frame when it is being raised andlowered therein, and that it does not always keep itself in place is well known to boilers. I so keep it within thei'rame by means ot the roller F attached to projections 011 the frame, the door passing between it and the frame as it is raised or lowered.

The other parts of my door being like unto the doors in use, and familiar to all boilers and manufacturers of furnaces, I need not here describe them, having already described some of such parts most intimately connected with my improvements.

What I claim as my invention, and desire to secure by Letters Patent, is

l. The combination, consisting of the door- JOHN G. HABERFIELD.

Witnesses:

J. BOONE MOLURE, EZRA E. WORTHEN. 

